CN111385930A - Control method and device of electromagnetic heating appliance and electromagnetic heating appliance - Google Patents
Control method and device of electromagnetic heating appliance and electromagnetic heating appliance Download PDFInfo
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- CN111385930A CN111385930A CN201811642149.4A CN201811642149A CN111385930A CN 111385930 A CN111385930 A CN 111385930A CN 201811642149 A CN201811642149 A CN 201811642149A CN 111385930 A CN111385930 A CN 111385930A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
- F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0202—Switches
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Abstract
The invention provides a control method and a control device of an electromagnetic heating appliance and the electromagnetic heating appliance, wherein the control method of the electromagnetic heating appliance comprises the following steps: outputting a single pot detection pulse to drive a switch device in the electromagnetic heating appliance after detecting that the electromagnetic heating appliance stops heating; acquiring the temperature of the furnace surface and the number of resonance pulses within a first set time; and controlling the electromagnetic heating appliance to start and heat according to the temperature of the furnace surface and the number of the resonant pulses. According to the control method and device for the electromagnetic heating appliance and the electromagnetic heating appliance, under the condition that the magnetism of the load cooker is lost or weakened, the electromagnetic heating appliance can be accurately controlled, the generation of noise and the frequent starting of a switch device in the electromagnetic heating appliance are prevented, the reliability of the switch device is improved, and the switch device is prevented from being burnt.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a control method and device of an electromagnetic heating appliance and the electromagnetic heating appliance.
Background
The automatic thermostatic pot can realize the automatic thermostatic control of the pot, and can improve the cooking effect. The automatic constant temperature pan is prepared by utilizing the characteristic that the material loses magnetism at the Curie point, for example, the magnetism of the automatic constant temperature pan adopting the 4J36 material disappears at 230 ℃, so that the automatic constant temperature control at 230 ℃ can be realized.
In the related art, when the load of the induction cooker is an automatic thermostatic pot, the induction cooker will always circulate among pot detection, heating and heating stop under the condition that the magnetism of the automatic thermostatic pot is lost or weakened at high temperature, so that the noise is serious, and a switching device in the induction cooker is frequently started (the switching device has starting pulse current when being started), so that the reliability of the switching device is reduced, and even the switching device is burnt.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
To this end, a first object of the present invention is to provide a control method for an electromagnetic heating appliance, which outputs a single pan detection pulse to drive a switch device in the electromagnetic heating appliance after detecting that the electromagnetic heating appliance stops heating; according to the temperature of the oven surface and the number of resonance pulses within the first set time, the electromagnetic heating appliance is controlled to be started for heating, so that the electromagnetic heating appliance can be accurately controlled under the condition that the load cooker loses magnetism or the magnetism is weakened, the generation of noise and the frequent starting of a switching device in the electromagnetic heating appliance are prevented, the reliability of the switching device is improved, and the switching device is prevented from being burnt.
A second object of the present invention is to provide a control device for an electromagnetic heating appliance.
A third object of the present invention is to provide an electromagnetic heating appliance.
A fourth object of the invention is to propose an electronic device.
A fifth object of the invention is to propose a non-transitory computer-readable storage medium.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a method for controlling an electromagnetic heating appliance, including:
outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after detecting that the electromagnetic heating appliance stops heating;
acquiring the temperature of the furnace surface and the number of resonance pulses within a first set time;
and controlling the electromagnetic heating appliance to start heating according to the furnace surface temperature and the resonance pulse number.
According to the control method of the electromagnetic heating appliance provided by the embodiment of the invention, firstly, after the electromagnetic heating appliance is detected to stop heating, a single pot detection pulse is output to drive a switching device in the electromagnetic heating appliance, then, the furnace surface temperature and the number of resonance pulses within a first set time are obtained, and finally, the electromagnetic heating appliance is controlled to start heating according to the furnace surface temperature and the number of resonance pulses. Under the condition that the magnetism of the load cooker is lost or weakened, the accurate control of the electromagnetic heating appliance can be still realized, the generation of noise and the frequent starting of a switch device in the electromagnetic heating appliance are prevented, the reliability of the switch device is improved, and the switch device is prevented from being burnt.
According to an embodiment of the present invention, the control method further includes: obtaining a working current; and controlling the electromagnetic heating appliance to stop heating if the working current is smaller than a preset current threshold.
According to an embodiment of the present invention, the controlling the electromagnetic heating device to start heating according to the furnace surface temperature and the number of resonant pulses includes: and if the number of the resonance pulses is equal to or larger than a preset threshold value of the number of the resonance pulses, returning to the step of outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after delaying for a second set time.
According to an embodiment of the present invention, the controlling the electromagnetic heating device to start heating according to the furnace surface temperature and the number of resonance pulses further includes: and controlling the electromagnetic heating appliance to start heating if the resonance pulse number is smaller than the resonance pulse number threshold and the furnace surface temperature is equal to or smaller than a preset furnace surface temperature threshold.
According to an embodiment of the present invention, the controlling the electromagnetic heating device to start heating according to the furnace surface temperature and the number of resonance pulses further includes: and if the resonance pulse number is smaller than the resonance pulse number threshold and the furnace surface temperature is larger than the furnace surface temperature threshold, controlling the electromagnetic heating appliance to start heating after delaying for a third set time.
According to an embodiment of the present invention, the controlling the electromagnetic heating device to start heating after delaying the third set time comprises: returning to the step of outputting a single pan detection pulse to drive a switching device in the electromagnetic heating appliance every other second set time within the third set time; and after the third set time is delayed, controlling the electromagnetic heating appliance to start heating if the resonance pulse number is still smaller than the resonance pulse number threshold and the furnace surface temperature is still larger than the furnace surface temperature threshold.
In order to achieve the above object, a second aspect of the present invention provides a control device for an electromagnetic heating appliance, including:
the output module is used for outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after detecting that the electromagnetic heating appliance stops heating;
the first acquisition module is used for acquiring the temperature of the furnace surface and the number of resonance pulses within a first set time;
and the first control module is used for controlling the electromagnetic heating appliance to start heating according to the furnace surface temperature and the number of the resonance pulses.
According to the control device of the electromagnetic heating appliance provided by the embodiment of the invention, firstly, after the electromagnetic heating appliance is detected to stop heating, a single pot detection pulse is output to drive a switch device in the electromagnetic heating appliance, then, the furnace surface temperature and the number of resonance pulses within a first set time are obtained, and finally, the electromagnetic heating appliance is controlled to start heating according to the furnace surface temperature and the number of resonance pulses. Under the condition that the magnetism of the load cooker is lost or weakened, the accurate control of the electromagnetic heating appliance can be still realized, the generation of noise and the frequent starting of a switch device in the electromagnetic heating appliance are prevented, the reliability of the switch device is improved, and the switch device is prevented from being burnt.
According to an embodiment of the present invention, the control apparatus further includes: the second acquisition module is used for acquiring working current; and the second control module is used for controlling the electromagnetic heating appliance to stop heating when the working current is smaller than a preset current threshold value.
According to an embodiment of the present invention, the first control module is specifically configured to: and if the number of the resonance pulses is equal to or larger than a preset threshold value of the number of the resonance pulses, returning to the step of outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after delaying for a second set time.
According to an embodiment of the present invention, the first control module is further configured to: and controlling the electromagnetic heating appliance to start heating if the resonance pulse number is smaller than the resonance pulse number threshold and the furnace surface temperature is equal to or smaller than a preset furnace surface temperature threshold.
According to an embodiment of the present invention, the first control module is further configured to: and if the resonance pulse number is smaller than the resonance pulse number threshold and the furnace surface temperature is larger than the furnace surface temperature threshold, controlling the electromagnetic heating appliance to start heating after delaying for a third set time.
According to an embodiment of the present invention, the first control module is specifically configured to: returning to the step of outputting a single pan detection pulse to drive a switching device in the electromagnetic heating appliance every other second set time within the third set time; and after the third set time is delayed, controlling the electromagnetic heating appliance to start heating if the resonance pulse number is still smaller than the resonance pulse number threshold and the furnace surface temperature is still larger than the furnace surface temperature threshold.
In order to achieve the above object, a third aspect of the present invention provides an electromagnetic heating appliance, including: the control device for the electromagnetic heating appliance according to the embodiment of the second aspect of the invention.
According to one embodiment of the invention, the electromagnetic heating appliance is an induction cooker.
To achieve the above object, a fourth aspect of the present invention provides an electronic device, including: a memory, a processor and a computer program stored on the memory and operable on the processor, the processor implementing the method of controlling an electromagnetic heating appliance according to an embodiment of the first aspect of the present invention when executing the program.
To achieve the above object, a fifth embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements a method for controlling an electromagnetic heating appliance according to the first embodiment of the present invention.
Drawings
FIG. 1 is a main circuit diagram of an induction cooker;
FIG. 2 is a control diagram of pot detection pulses of the induction cooker;
FIG. 3 is a flow chart of a method of controlling an electromagnetic heating appliance according to one embodiment of the present invention;
fig. 4 is a flowchart of a control method of an electromagnetic heating appliance according to another embodiment of the present invention;
FIG. 5 is a schematic diagram of controlling the electromagnetic heating appliance to turn on heating;
FIG. 6 is a detailed flow chart of a method of controlling an electromagnetic heating appliance according to one embodiment of the present invention;
fig. 7 is a structural view of a control device of an electromagnetic heating appliance according to an embodiment of the present invention;
FIG. 8 is a block diagram of an electromagnetic heating appliance according to one embodiment of the present invention;
FIG. 9 is a block diagram of an electronic device in accordance with one embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes a control method and device for an electromagnetic heating appliance and an electromagnetic heating appliance according to an embodiment of the present invention with reference to the drawings.
Fig. 1 is a diagram of a main circuit of an induction cooker, as shown in fig. 1, the main circuit of the induction cooker includes: a rectifier bridge D1; a choke coil L1; coil disc L2 (resonant inductance); a filter capacitor C1; a resonant capacitance C2; a power tube IGBT; a voltage sampling module U1; a current sampling module U2; an IGBT driver module U3; a furnace surface temperature detection module U4; a synchronous circuit including resistors R1, R2, R3, R4 and a comparator CMP; master IC1, and master IC 1. The number of resonant pulses of the induction cooker can be obtained through the main circuit, specifically, as shown in fig. 2, the main control chip IC1 outputs a single pot detection pulse (for example, a pulse with a width of 8 microseconds in fig. 2) to the IGBT driving module U3 to drive the IGBT, in the on time of the single pulse of the IGBT, L2 resonates with C2, so that the CMP synchronously outputs the resonant pulse, the number a of times of turning the CMP falling edge within K milliseconds (ms) is accumulated, and the number a of times of turning the CMP falling edge is the number of resonant pulses of the induction cooker.
Fig. 3 is a flowchart of a control method of an electromagnetic heating appliance according to an embodiment of the present invention, as shown in fig. 3, the control method including:
and S101, outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after detecting that the electromagnetic heating appliance stops heating.
In the embodiment of the invention, after the electromagnetic heating appliance is detected to stop heating, a single pot detection pulse is output to drive a switching device in the electromagnetic heating appliance, wherein the width range of the pot detection pulse can be 5-10 microseconds (us), specifically 8us, and the switching device can be specifically the IGBT shown in fig. 1. As a possible implementation manner, the pan detection pulse may be specifically generated by the main control chip shown in fig. 1 and output to the IGBT driving module shown in fig. 1 to drive the IGBT.
S102, acquiring the furnace surface temperature T and the number A of resonance pulses within a first set time K.
In the embodiment of the invention, the furnace surface temperature T and the number A of resonance pulses within a first set time K are obtained, wherein the range of the first set time K can be 10-40 milliseconds (ms). As a possible embodiment, the furnace surface temperature T may be obtained by the furnace surface temperature detection module shown in fig. 1, and the number of resonance pulses a within the first set time K may be obtained by the main circuit shown in fig. 1.
And S103, controlling the electromagnetic heating appliance to start heating according to the furnace surface temperature T and the resonant pulse number A.
In the embodiment of the invention, the electromagnetic heating appliance is controlled to be started to heat according to the furnace surface temperature T and the resonant pulse number A.
According to the control method of the electromagnetic heating appliance provided by the embodiment of the invention, firstly, after the electromagnetic heating appliance is detected to stop heating, a single pot detection pulse is output to drive a switching device in the electromagnetic heating appliance, then, the furnace surface temperature and the number of resonance pulses within a first set time are obtained, and finally, the electromagnetic heating appliance is controlled to start heating according to the furnace surface temperature and the number of resonance pulses. Under the condition that the magnetism of the load cooker is lost or weakened, the accurate control of the electromagnetic heating appliance can be still realized, the generation of noise and the frequent starting of a switch device in the electromagnetic heating appliance are prevented, the reliability of the switch device is improved, and the switch device is prevented from being burnt.
Fig. 4 is a flowchart of a control method of an electromagnetic heating appliance according to another embodiment of the present invention, as shown in fig. 4, the control method further includes:
s201, obtaining the working current I.
In the embodiment of the present invention, the working current I is obtained, specifically, the working current I may be obtained through the current sampling module shown in fig. 1.
S202, controlling the electromagnetic heating appliance to stop heating when the working current I is smaller than a preset current threshold I0.
In the embodiment of the present invention, a current threshold I0 may be preset, and the current threshold I0 may specifically range from 1 to 4 amperes (a). When the working current I is smaller than the preset current threshold I0, it is indicated that no cookware may be placed on the electromagnetic heating appliance at this time, or the cookware loses magnetism or loses magnetism at a high temperature, and the electromagnetic heating appliance is controlled to stop heating.
According to the control method of the electromagnetic heating appliance provided by the embodiment of the invention, the electromagnetic heating appliance is controlled to stop heating according to the working current and the preset current threshold, so that the electromagnetic heating appliance can be accurately controlled.
Further, the step S103 in the embodiment shown in fig. 3 may specifically include: and if the number A of the resonance pulses is equal to or larger than a preset threshold A0 of the number of the resonance pulses, returning to the step of outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after delaying for a second set time N.
In the embodiment of the invention, a threshold value A0 of the resonance pulse number can be preset, the threshold value A0 of the resonance pulse number can be a critical value of no pan placed on the electromagnetic heating appliance, when the resonance pulse number A is larger than or equal to A0, it can be judged that no pan is placed on the electromagnetic heating appliance at present, wherein the range of A0 can be 1-4. After the number A of the resonance pulses is obtained, comparing A with A0, if A is larger than or equal to A0, it is indicated that no cookware is placed on the current electromagnetic heating appliance, and returning to the step of outputting a single pot detection pulse to drive a switch device in the electromagnetic heating appliance after delaying a second set time N, so as to monitor the state of the electromagnetic heating appliance in real time, wherein the second set time N can be 1-5 seconds(s).
Further, the step S103 in the embodiment shown in fig. 3 may further include: and controlling the electromagnetic heating appliance to start heating when the resonance pulse number A is less than the resonance pulse number threshold A0 and the furnace surface temperature T is equal to or less than a preset furnace surface temperature threshold T0.
In the embodiment of the invention, a furnace surface temperature threshold value T0 can be preset, T0 can be a critical value of the electromagnetic heating appliance needing to be started for heating, and when a pot is placed on the electromagnetic heating appliance and T is less than or equal to T0, the electromagnetic heating appliance can be judged to need to be started for heating. After the resonant pulse number A and the furnace surface temperature T are obtained, A is compared with A0, and T is compared with T0, if A is less than A0 and T is less than or equal to T0, the electromagnetic heating appliance is placed on a cooker and needs to be started to heat, and the electromagnetic heating appliance is controlled to be started to heat.
Further, the step S103 in the embodiment shown in fig. 3 may further include: and if the resonance pulse number A is less than the resonance pulse number threshold A0 and the furnace surface temperature T is greater than the furnace surface temperature threshold T0, delaying the third set time M and controlling the electromagnetic heating appliance to start heating.
In the embodiment of the invention, after the number of resonance pulses A and the temperature T of the furnace surface are obtained, A is compared with A0, and T is compared with T0, if A is less than A0 and T is more than T0, the situation that a cooker is placed on the electromagnetic heating appliance at the moment but the electromagnetic heating appliance does not need to be started for a moment is explained, the electromagnetic heating appliance is controlled to be started for heating after a third set time M is delayed, wherein the third set time M can be specifically 2-20 s.
As a possible implementation manner, as shown in fig. 5, during a third set time M, returning to the step of outputting a single pan detection pulse to drive the switch device in the electromagnetic heating appliance every second set time N, and detecting the state of the electromagnetic heating appliance in real time during the third set time M; after delaying the third set time M, controlling the electromagnetic heating appliance to start heating if the resonance pulse number A is still less than the resonance pulse number threshold A0 and the furnace surface temperature T is still greater than the furnace surface temperature threshold T0.
According to the control method of the electromagnetic heating appliance provided by the embodiment of the invention, the electromagnetic heating appliance is controlled to be started to heat according to the furnace surface temperature and the resonant pulse number. Under the condition that the magnetism of the load cooker is lost or weakened, the accurate control of the electromagnetic heating appliance can be still realized, the generation of noise and the frequent starting of a switch device in the electromagnetic heating appliance are prevented, the reliability of the switch device is improved, and the switch device is prevented from being burnt.
For clarity of explanation of the above embodiments, the embodiments of the present invention are described in detail below with reference to fig. 6, and fig. 6 is a specific flowchart of a control method of an electromagnetic heating appliance according to an embodiment of the present invention; as shown in fig. 6, the control method may specifically include:
s301, after the electromagnetic heating appliance is detected to stop heating, outputting a single pot detection pulse to drive a switch device in the electromagnetic heating appliance.
S302, acquiring the furnace surface temperature T and the number A of resonance pulses in a first set time.
S303, judging whether A is less than A0.
If yes, go to step S304; if not, the process proceeds to step S307.
S304, judging whether T is more than T0.
If yes, go to step S305; if not, the process proceeds to step S308.
S305, returning to the step of outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance every second set time N within the third set time M.
S306, after delaying the third set time M, if A is still less than A0 and T is still greater than T0, controlling the electromagnetic heating appliance to start heating.
S307, after delaying the second set time N, returning to the step of outputting a single pot detection pulse to drive a switch device in the electromagnetic heating appliance.
And S308, controlling the electromagnetic heating appliance to start heating.
According to the control method of the electromagnetic heating appliance provided by the embodiment of the invention, firstly, after the electromagnetic heating appliance is detected to stop heating, a single pot detection pulse is output to drive a switching device in the electromagnetic heating appliance, then, the furnace surface temperature and the number of resonance pulses within a first set time are obtained, and finally, the electromagnetic heating appliance is controlled to start heating according to the furnace surface temperature and the number of resonance pulses. Under the condition that the magnetism of the load cooker is lost or weakened, the accurate control of the electromagnetic heating appliance can be still realized, the generation of noise and the frequent starting of a switch device in the electromagnetic heating appliance are prevented, the reliability of the switch device is improved, and the switch device is prevented from being burnt.
Fig. 7 is a structural view of a control device of an electromagnetic heating appliance according to an embodiment of the present invention, as shown in fig. 7, the control device including:
the output module 21 is used for outputting a single pot detection pulse to drive a switch device in the electromagnetic heating appliance after detecting that the electromagnetic heating appliance stops heating;
the first acquisition module 22 is used for acquiring the temperature of the furnace surface and the number of resonance pulses within a first set time;
and the first control module 23 is used for controlling the electromagnetic heating appliance to start heating according to the furnace surface temperature and the resonant pulse number.
It should be noted that the foregoing explanation of the embodiment of the control method of the electromagnetic heating appliance is also applicable to the control device of the electromagnetic heating appliance of this embodiment, and details are not repeated here.
According to the control device of the electromagnetic heating appliance provided by the embodiment of the invention, firstly, after the electromagnetic heating appliance is detected to stop heating, a single pot detection pulse is output to drive a switch device in the electromagnetic heating appliance, then, the furnace surface temperature and the number of resonance pulses within a first set time are obtained, and finally, the electromagnetic heating appliance is controlled to start heating according to the furnace surface temperature and the number of resonance pulses. Under the condition that the magnetism of the load cooker is lost or weakened, the accurate control of the electromagnetic heating appliance can be still realized, the generation of noise and the frequent starting of a switch device in the electromagnetic heating appliance are prevented, the reliability of the switch device is improved, and the switch device is prevented from being burnt.
Further, in a possible implementation manner of the embodiment of the present invention, the control device further includes: the second acquisition module is used for acquiring working current; and the second control module is used for controlling the electromagnetic heating appliance to stop heating when the working current is smaller than a preset current threshold value.
Further, in a possible implementation manner of the embodiment of the present invention, the first control module 23 is specifically configured to: and if the number of the resonance pulses is equal to or larger than the preset threshold value of the number of the resonance pulses, returning to the step of outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after delaying for a second set time.
Further, in a possible implementation manner of the embodiment of the present invention, the first control module 23 is further configured to: and controlling the electromagnetic heating appliance to start heating if the resonance pulse number is less than the resonance pulse number threshold and the furnace surface temperature is equal to or less than a preset furnace surface temperature threshold.
Further, in a possible implementation manner of the embodiment of the present invention, the first control module 23 is further configured to: and if the resonance pulse number is smaller than the resonance pulse number threshold and the furnace surface temperature is larger than the furnace surface temperature threshold, controlling the electromagnetic heating appliance to start heating after delaying for a third set time.
Further, in a possible implementation manner of the embodiment of the present invention, the first control module 23 is specifically configured to: returning to the step of outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance every second set time within a third set time; after delaying the third set time, controlling the electromagnetic heating appliance to start heating if the resonance pulse number is still less than the threshold value of the resonance pulse number and the furnace surface temperature is still greater than the threshold value of the furnace surface temperature.
It should be noted that the foregoing explanation of the embodiment of the control method of the electromagnetic heating appliance is also applicable to the control device of the electromagnetic heating appliance of this embodiment, and details are not repeated here.
According to the control device of the electromagnetic heating appliance provided by the embodiment of the invention, firstly, after the electromagnetic heating appliance is detected to stop heating, a single pot detection pulse is output to drive a switch device in the electromagnetic heating appliance, then, the furnace surface temperature and the number of resonance pulses within a first set time are obtained, and finally, the electromagnetic heating appliance is controlled to start heating according to the furnace surface temperature and the number of resonance pulses. Under the condition that the magnetism of the load cooker is lost or weakened, the accurate control of the electromagnetic heating appliance can be still realized, the generation of noise and the frequent starting of a switch device in the electromagnetic heating appliance are prevented, the reliability of the switch device is improved, and the switch device is prevented from being burnt.
In order to implement the above embodiment, the embodiment of the present invention further provides an electromagnetic heating apparatus 30, as shown in fig. 8, including the control device 31 of the electromagnetic heating apparatus shown in the above embodiment.
Further, in a possible implementation manner of the embodiment of the present invention, the electromagnetic heating device 30 may be specifically an electromagnetic oven.
In order to implement the foregoing embodiment, the embodiment of the present invention further provides an electronic device 40, as shown in fig. 9, which includes a memory 41 and a processor 42. The memory 41 stores thereon a computer program operable on the processor 42, and the processor 42 executes the program to implement the control method of the electromagnetic heating appliance as shown in the above-mentioned embodiments.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (16)
1. A method of controlling an electromagnetic heating appliance, comprising:
outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after detecting that the electromagnetic heating appliance stops heating;
acquiring the temperature of the furnace surface and the number of resonance pulses within a first set time;
and controlling the electromagnetic heating appliance to start heating according to the furnace surface temperature and the resonance pulse number.
2. The control method according to claim 1, characterized by further comprising:
obtaining a working current;
and controlling the electromagnetic heating appliance to stop heating if the working current is smaller than a preset current threshold.
3. The control method according to claim 1, wherein the controlling the electromagnetic heating appliance to start heating according to the furnace surface temperature and the number of resonance pulses comprises:
and if the number of the resonance pulses is equal to or larger than a preset threshold value of the number of the resonance pulses, returning to the step of outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after delaying for a second set time.
4. The control method according to claim 3, wherein the controlling the electromagnetic heating appliance to start heating based on the furnace surface temperature and the number of resonance pulses further comprises:
and controlling the electromagnetic heating appliance to start heating if the resonance pulse number is smaller than the resonance pulse number threshold and the furnace surface temperature is equal to or smaller than a preset furnace surface temperature threshold.
5. The control method according to claim 4, wherein the controlling the electromagnetic heating appliance to start heating according to the furnace surface temperature and the number of resonance pulses further comprises:
and if the resonance pulse number is smaller than the resonance pulse number threshold and the furnace surface temperature is larger than the furnace surface temperature threshold, controlling the electromagnetic heating appliance to start heating after delaying for a third set time.
6. The control method according to claim 5, wherein the controlling the electromagnetic heating device to start heating after delaying the third set time comprises:
returning to the step of outputting a single pan detection pulse to drive a switching device in the electromagnetic heating appliance every other second set time within the third set time;
and after the third set time is delayed, controlling the electromagnetic heating appliance to start heating if the resonance pulse number is still smaller than the resonance pulse number threshold and the furnace surface temperature is still larger than the furnace surface temperature threshold.
7. A control device for an electromagnetic heating appliance, comprising:
the output module is used for outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after detecting that the electromagnetic heating appliance stops heating;
the first acquisition module is used for acquiring the temperature of the furnace surface and the number of resonance pulses within a first set time;
and the first control module is used for controlling the electromagnetic heating appliance to start heating according to the furnace surface temperature and the number of the resonance pulses.
8. The control device according to claim 7, characterized by further comprising:
the second acquisition module is used for acquiring working current;
and the second control module is used for controlling the electromagnetic heating appliance to stop heating when the working current is smaller than a preset current threshold value.
9. The control device according to claim 7, wherein the first control module is specifically configured to:
and if the number of the resonance pulses is equal to or larger than a preset threshold value of the number of the resonance pulses, returning to the step of outputting a single pot detection pulse to drive a switching device in the electromagnetic heating appliance after delaying for a second set time.
10. The control apparatus of claim 9, wherein the first control module is further configured to:
and controlling the electromagnetic heating appliance to start heating if the resonance pulse number is smaller than the resonance pulse number threshold and the furnace surface temperature is equal to or smaller than a preset furnace surface temperature threshold.
11. The control apparatus of claim 10, wherein the first control module is further configured to:
and if the resonance pulse number is smaller than the resonance pulse number threshold and the furnace surface temperature is larger than the furnace surface temperature threshold, controlling the electromagnetic heating appliance to start heating after delaying for a third set time.
12. The control device according to claim 11, wherein the first control module is specifically configured to:
returning to the step of outputting a single pan detection pulse to drive a switching device in the electromagnetic heating appliance every other second set time within the third set time;
and after the third set time is delayed, controlling the electromagnetic heating appliance to start heating if the resonance pulse number is still smaller than the resonance pulse number threshold and the furnace surface temperature is still larger than the furnace surface temperature threshold.
13. An electromagnetic heating appliance, comprising: control device for an electromagnetic heating appliance as claimed in any of the claims 7-12.
14. The electromagnetic heating appliance according to claim 13, wherein the electromagnetic heating appliance is an induction cooker.
15. An electronic device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements a method of controlling an electromagnetic heating appliance as claimed in any one of claims 1 to 6.
16. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements a method of controlling an electromagnetic heating appliance according to any one of claims 1 to 6.
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| CN114680632A (en) * | 2020-12-29 | 2022-07-01 | 佛山市顺德区美的电热电器制造有限公司 | Half-bridge driving heating pot detection circuit, heating equipment, pot detection method and storage medium |
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| CN111385930B (en) | 2022-04-29 |
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